FR: Allow "per week" use when linking a spell to a magic item the same way exists a "per day"

[irbian]

Current workaround: Use charges or per day instead, and keep the count manually

[github-actions[bot]]

Thanks for opening an issue, traveller! If your issue is related to an actor or an item, sending thing that is broken will help a lot and speed up debugging.

How to send an item? > - If item is owned by a character, drag and drop it to world item list. > - Right click on item in browser item list and click export. > - Attach downloaded item to this ticket. How to send an actor? > - Right click on actor in browser actor list and click export. > - Attach downloaded actor to this ticket.